.form_con{
    width: 600px;
    height: 500px;
    border: 1px solid;
    background: rgb(62, 61, 61);
    margin: 50px auto;
    padding: 20px;
}
.form_con:hover{
    width: 600px;
    height: 500px;
    background: cadetblue;
    margin: 50px auto;
    padding: 20px;
}
.form_con input,p{
    font-size: 20px;
}

.form_class1{
    width: 600px;
    height: 500px;
    margin: 100px auto;
}
body{
    margin: 0;
	padding: 0;
	font-family: sans-serif;
	background: url("../imgs/slide.jpg") no-repeat center 1px;
	background-size: cover;
    background-position: center 0;
    background-attachment: fixed;
}
#u1{
    font-size:12px;
    /*display:none;*/
}
#u2{
    font-size:12px;
    /*display:none;*/
}
/*正则表达式调用*/
.ok{
    background: #0af560;
}
.error{
    background: red;
}